/*
 * Copyright 2017 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef SkSGInvalidationController_DEFINED
#define SkSGInvalidationController_DEFINED

#include "include/core/SkMatrix.h"
#include "include/core/SkTypes.h"

#include <vector>

struct SkRect;

namespace sksg {
/* *
 * Receiver for invalidation events.
 *
 * Tracks dirty regions for repaint.
 */
class InvalidationController {
public:
    InvalidationController();
    InvalidationController(const InvalidationController &) = delete;
    InvalidationController &operator = (const InvalidationController &) = delete;

    void inval(const SkRect &, const SkMatrix &ctm = SkMatrix::I());

    const SkRect &bounds() const
    {
        return fBounds;
    }

    auto begin() const
    {
        return fRects.cbegin();
    }
    auto end() const
    {
        return fRects.cend();
    }

    void reset();

private:
    std::vector<SkRect> fRects;
    SkRect fBounds;
};
} // namespace sksg

#endif // SkSGInvalidationController_DEFINED
